The S&B Filters AS-1009 Cold Air Scoop for your 2006-2007 Chevy 2500HD/3500HD 6.6L Duramax LBZ is designed to fit perfectly with with the S&B 75-5013-1 cold air intake system on your truck. Built from the same durable material as your intake system, this duct will provide cool, dense air to the intake system under your hood.